USPTO Patents Application 09632741

SLL 1477423 A1

• (3D 4 A 61 M 25/00

TOOXaAPCTOEHHWfl HOMkfTET
nO M306PETEHHSM M OTHPfc/TMflM
HPM rKHT OCCP ■ •

prjMCAHME M30BPETEHMfI

K ABTOPCKOMV CBMflETETIbCTBy

TH MeOKUHHbl,- B V flCTHOCTH K OajUIOHKbIM

KftTerepaM* ileus Hso6pereHHH - paBko-
MepHoe oafijieHHe Ha ctchkh Tipoixsa
npH yCTAKOBKe ero s kpobchochom co-
eyjja. BannOHKbift kstetep coaepxHT na-
zzyBHwe KapyxHyw 3 h oKyTpeHwow 2
Tpy6icK c TKaHCBOft o6ono**oft 4 nexay
hkmk. TKaxeBafl oQoncrcica 4 BunonHeKa
H3 HepacTflrHsatomerocH MATeptcana c
npoaojibHUMM rcxbpaMK^ fijiaroflapa koto*
pbtM npn padAyBaHHH npoHcxooHT paBHO-
MepHOe pacnpeAe-neHwa aaaneKH* Ha
CTeKXK npoTesa* 3 hji«

•(•210 4012882/28-14
(22) 16.01 ,86
(46) 07.05.89. Bion. * 17
1(71 ) OcoOoe KOHCTpyKTopcKO-TexHono-

OM^p* iKHCTMryTa RM9KHX TeMnepaTyp AH YCCP

^LoJ^ |(72) JI.^.HKOBeHKo, B.H.KyneOa,

^ HJI.Banofloct h B.<D.yjxoBeKico

(53) 615,47.2 (088,8)

(56) nareHT CBIA * 4327736.
Kfl. A 61 M 25/00, 1 982*

(54) RAJUlOHHUft KATETEP

(57) HsoCpeTeHHe othochtch k o6/iac-

BEST AVAILABLE COP>

t

1477423

H306pereHHe othociitcr k mcahuhhc-

KOft TeXWHKft, a HMCHHO K yCTpottCTBAM,

o6ecne*tMBaiomHM pacsofpeHite TpyfinnTbix
opraHoo *

U&TTb H3o6peTewHH - paBKOMepHoe
nasneHHe Ha ctghkh nporesa npH ycT*-
hobkc ero s KpOB eHOCHOM coeyae*

Ha 4»ht. 1 npeacTasjicHA cxena fian-
noHHoro.KaTeTCpa/ hcxoahoc no/iowe-
Hwe; ha $Hr, 2 - to we, pacnpaaneH-
HOe nonoxeHne; Ha $Hr. 3 - bha A Ha
4>Hr. 2,

BajuioHHUfi KaTeTep coaep*«T nonyw
rH6Kyw Tpy6Ky 1 c sarnymeKHbiM kohuom
c 6annoHOM Ha stom icoKue, BbinonHeH,-
hwm K3 BHyTpeHHeH 2 h HapyxHofi 4 Ha-
AyBHbix Tpy6pK c TxaHesOH o6ojiokkoh
4 Mexay hhmh, zuih yMeHbmeHH* TpaKHH
Mewy KOTOphWH BBenena cMasxa S.Tica-
HSQafl o6ano*iKa 4 BbtnojiHeHa hs Hepac-
TfrrwoaiomerocH MaTepwana c npOflOnbHbi-
mh rofcpaMK. Kohuw TpyfioK 2 u 3 h
o6onovfCH 4 c rotJipaMH aaKpenjiemj na
rpy6ice 1 Tax, <tT0 Meray rpyfiKoft 1
h pacTjrrHD atom eft en TpytfKofi 2 o6pa3yeT-
c« nonocTb, coodmajonxancR c KaHaaoM
rpyfiKH I ^epes orBepc™* 6.

BajuiOHHHft KaTeTep aeficTByeT cne-
aywmHM of>paaoM f

ITo Tpyf5xe 1 8 nonocTb 6ajinoHa
nocrynaeT wHAKOCTb noa . nasneHwaM w
pacnpanjTHeT 6artnoH jio ero npenenbHo-
ro pa$Mepa, orpanH*ieHHoro o6ojiomkok
4 c pacnpaBjreHKWMH ro<t>paMH. Tlpw paa-
AyoaHKH tfa/rnowa n TpyfiwaTOM oprane,
KMeromeM pasnep, MeHbrnift paaMp.pa 6an-
aoiia c pacnpasjieHHOfl o6oaomkow 4,
G/raroflapa ee yKJianKc b bhac npo-
aonbin.rx ro$p nponcxoAHT paBHOMCpHoe
uaBJiennc GajuroHa Ha ctchkh Tpy6na-
roro oprawa, npw c6pacbmaHHH aaBae-

hhh khakocth Gannon nosnpantaeTCfi n
KCXOAHoe nonomttHKR. Tlpw stom b pe-
synbTaTe ro$pKpoBiiHMoro BAKpetvieHH*
5 oGojtottKH 4 a kohuax SajuioHa npOHc-
xootit yicnajiKa TKaitenon oOojtohkh c
o6pA3onaHHeM hcxoawx ro$p.

n p h m e p. y ftonbHoro c cyxeHH-
eM ofineft h Hapy*Kbtx noaBsaomnhix ap-
tO TepHft BHyTpb apTepHH bbojxht b cxa-
tom BKAe TpyBMaTbifi npOTes m c no-
Mombto 6annoHHoro KareTepa, b cbow
oiepeab BseaeKKoro BHyTpb npoTesa,
pacnpaajijnoT h ycaxHBatoT npoTea b
15 cTeHKy apTepHH, ynynman kpobotok.
BanjTOHHbiit KATerep o6ecne<iHBaeT
jzaBJieHKe Ha ctchkh npOTesa, neo6xo-
AHMoe ami npeoaojieKHH conpoTHBJieHKK
ctchok apTcpHM * TIpOAOJibHbie ro4>pw
^0 o6ecneHHBajoT pasHOMftpHoe jaasneHHe h
HCiuiKwaioT oAHOCTopoHHee pacnpaBAGHHe
h ycaaxy npoTe9a. CMa9Ka yMeHbmaeT
BepORTHOCTb paipymeHWH TpymKxca Mei-
Ay coQoh Tpy6oK h yjiy^maeT ycjtOBHa

25

30

yxnaAXK oGojtomkk npoaoiibKbiMH ro4)pa-
;mh, hto noBhsnaeT npOHMKajonryw cnoco6-
InocTb 6ajmoHa n f cjieaoBarejibHo, ero

34xt>eKTHBKOCTb .

OopMyjia H3o6peTeHH«

BajmoHHbiH KaTeTep, coaepxantKA
nonyw rK£$Kyw Tpybxy c ftannoHOM, bw-
nOAHeHKblM H3 HaayBHhix HapyXHOH H

35 BHyTpflHHeft TpyCoK r. TKaHesoft o6ono^-

KOH MeJ«iy HHMH, O TAHMaWOHft-

c n TeM, **to, c uejibto paBHOMepHOro
aaBJieiiMH Ha CTeHKH npOTe3a npw ero
ycTa-HOBKe e KposeHocHOM cocyae,TKa-
40 Hesafl oSono^Ka BbinoAHeHa H3 HepacTH-
rHBaximerocfl MaTepwajia c npoaonbKWMH
ro4)paMH.

BEST AVAILABLE COPY

A

6

BEST AVAILABLE COP

Title Balloon Catheter

Assignee Special Technology/Design Bureau at the Physics Institute for Research of

Low Temperature Problems of Academy of Science of Ukraine
Disclosed May 7, 1989

The invention discloses a double-walled balloon catheter, with a cloth envelope between
the two inflatable walls. The object of the invention is to achieve uniform pressure during
stent deployment.

Fig. 1 is a schematic illustration of the balloon catheter in its initial state.

~^$^z:--i=^---3^^ * -

J

Fia. 2 shows the balloon catheter in its inflated state.

Fig. 3 is a cross-sectional view of the balloon along the arrow A of Fig. 2, and

displays the balloon both in its initial (inner circle) and its inflated (outer
circle) state. 3

6

The balloon catheter comprises a hollow flexible tube (1) having a closed end, with a
balloon attached. The balloon has an inner (2) and an outer (3) inflatable tubular wall
with a cloth envelope (4) between the two walls. The cloth envelope is made of a non-
elastic material having longitudinal folds. A lubricant (5) is applied to the envelope in
order to reduce wear on the adjacent inflatable walls due to friction, and to facilitate the
folding of the envelope back into longitudinal folds. The inflatable tubular balloon walls
(2), (3) and the envelope (4) are attached with their ends to the hollow tube of the catheter
(1) so that a cavity is formed between the hollow tube (1) and the inflatable walls (2). The
cavity connects to the channel of the hollow tube (1) via a plurality of holes (6).

BEST AVAILABLE COPY

Operation:

A fluid under pressure is fed via the tube (1) to the balloon cavity, to inflate the balloon
until its size reaches its upper limit, defined by the maximum inflated size of the cloth
envelope (4). The longitudinal folds provide for uniform pressure throughout the balloon.
Upon releasing the pressure, the balloon reverts into its initial state and the longitudinal
folds of the envelope are reformed.

Claims :

• A balloon catheter comprising a hollow flexible tube having a balloon attached to one
end.

• The balloon comprises inflatable inner and outer tubular walls, with a cloth envelope
between them.

• The purpose of the cloth envelope is to generate a uniform pressure onto a stent wall
during deployment.

• The cloth envelope is made of a non-elastic material having longitudinal folds.

BEST AVAILABLE t